Atoms and Elements Flashcards
1
Q
what are substances made up of?
A
particles
2
Q
what are elements?
A
pure substances
3
Q
what are atoms?
A
atoms are the smallest particles
4
Q
what is a molecule?
A
te particle you get when 2 or more atoms join together
5
Q
how many different atoms are there in a compound?
A
2 or more
6
Q
why does air not have a definite formula?
A
air is a mixture
